Cetetherm AquaEfficiency EFB112 DD, Инструкция по установке, обслуживанию и эксплуатации

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Cetetherm AquaEfficiency
Installation, service and operating instruction
49
12.5 Trending parameters
A lot of different variables can be recorded or trended.
It can be temperatures’ measurement, valves or pumps’
signals, ipsothermic contacts, alarms, thermal treatments etc.
1. Press key to access to Service Menu, then click on
“Continue.
2.
Select “Trending” in the menu
3.
Select “Points in Trend”.
The first time you enter this menu, the list is empty.
4. To add a variable to trend; choose .
5. Mark the variable to follow and press the wheel.
In this example the Secondary outlet temperature, S1.
6. Validate the variable by ticking in the Trend Log box. If this
box is empty the variable is in the list but it is not record.
There are two different ways to record:
a) Only the temperature change is recorded .
This saves memory and allows a longer sampling period
compared to method b.
Select the record hysteresis. In our case, every 1°C
temperature change is recorded. The hysteresis value can be
changed by clicking on it.
b) Record on a time base, whatever the temperature changes
or not.
Note that this method consumes memory, especially if a long
time base is selected. Here is the time base selected to 10
minutes recording (1 record every 10 minutes).
For method a set Trend cycle to zero, for method b , only
Trend Cycle value is considered.